What is √144 + √81?
Correct answer: A. 21
√144 = 12 and √81 = 9, so the sum is 21. Note that √144 + √81 is not √225 (= 15): square roots cannot be added by adding the numbers under the root sign.
easy
Answer and explanation
The correct answer is A. 21
√144 = 12 and √81 = 9, so the sum is 21. Note that √144 + √81 is not √225 (= 15): square roots cannot be added by adding the numbers under the root sign.
Topic: Basic Operations and Number Sequence MCQs · Subject: Numerical Ability